Alright, I'm back with some fresh observations from the Pokemon Match I played today. Let's get started.
Yes, it autocancels if you land during the move, but that requires you to not use it while rising on the short hop, or there'll be landing lag. Short hop isn't the only way to use it though... I use rising full-hop b-air way more often. Once the b-air finishes, you're in a position to continue spacing with a b-air while falling, n-air onto them, or even d-air. The knockback on b-air is disruptive enough that it won't be unsafe on hit or anything if used properly, even at low percents. Full-hop also allows us to react to running shield/dodge.
Guess I didn't think much of Ivy's other aerial options. Ivy sure has some nice tools for keeping her opponents from getting close to her. Ivy's bair (I mean primarily) creates alot of variables against Ike which can hinder him as well as rack up decent amount of damage on him.
Like you mentioned, SH isn't the only way for Ivy to bair effectively, I've noticed oliver (one of the guys who plays PT at my region) does full hop bairs too, except that he often mixes it with nairs when Ike gets closer by ADing. I'm guessing Ivy's nair also auto-cancels like bair (or has negligible landing lag since I've seen Ivy always gets on the move after using nair and landing). At low percents, Ivy's nair also combos into another nair and/or even uair (making a net amount of 30-40 damage); though I'm not sure if Ike can AD between them in time but I'm pretty sure he wont get the frames for it.
Coming over to Ike side, if Ivy only relies on her bairs then Ike can simply do what I mentioned previously. Things start getting challenging for him when Ivy's starts playing her spacing game. As far as range goes, Ivy only has bair for Ike from afar and nair upclose (I wanna add uair too but it seems to me her uair kinda depends on nair to actually hit ike) so in this match, Ike will have to disrupt Ivy's spacing and prevent from being caught or baited in to nairs or even fsmash if Ivy reaches the ground before him. Which means he'll have to space his fairs against Ivy's bairs (its the only one that outranges her bair. I've never got Ike's nair, bair or uair to work here) and all his other aerials against her nair. Not spacing properly means getting tangled in Ivy's bair/nair and eating alot of damage.
There is also one more thing to mention here: None of these characters can weave in and out during their aerials so it'll either be an approaching aerial or retreating aerial, although Ike may have a little easy time moving in air, he is still pretty much slow when it comes to aerial mobility.
The gimp... I think I'm still underestimating the horizontal knockback of Ike's dash attack. Either that, or I've been desensitized to the effect of Ivysaur's terrible recovery on a matchup... it hurts, but Ivysaur players have learnt to deal with it in other matchups, and I don't see how Ike's is any more threatening. The fact that you can land it out of a grab is slightly disconcerting I suppose... at what percents can you combo DA out of a throw?
Eating a DA at around 80-90% near the ledge means Ivy is gimp-able. She can however do her downair momentum cancel and sideB to UpB, but Ike can play around here with his offstage game. He can very well attempt a fair, bair offstage and aether back onstage; or just time a speed-hug or whatever if Ivy has been thrown more horizontally.
I think you're thinking it's easier to approach Ivy than it really is... I'll wait for your response to the b-air paragraph.
Now that I think about it, Ivy really lives upto to Ike in terms of spacing. But then, She can't deal with him in her face and her recovery is worse than his. Ike can pretty much juggle Ivy with his jab cancel shenanigans. Further more, Ivy is middle weight, meaning she's already at gimp risk if Ike hits her with bair, fair, ftilt around 80+ (KO risk if he hits her with uncharged upsmash, ftilt, bair or uair at around 90~100+).
Even if Ivy plays really carefully with her spacing game, she has to close in to KO Ike so she's always at risk against him.
It's been a confusing issue since... release basically. A while ago I got fed up with not knowing, so I just decided my Ivysaur is a girl. A lot of players have done the same lol
I'll follow you here too. I have referred to Ivy as a she far too many times to change her gender now. lol
It sounds like Ivy would be in a horrible position if he was above the ledge offstage and unable to tether immediately, but can't you just DI down when the dash attack hits you and then tether before Ike gets to you?
bthrow>DA doesn't work if Ike has his back next to the ledge. He'll need some running distance to make this combo work.
EDIT: I've still to test that tether grab against Ike's reverse aether thingy. I should be back tomorrow with the results for it. Couldn't do this today.