Chaudgobay; you didn't actually disagree with me, since the newest tier-list changed the tier names so now Link and Luigi are "low-tier." We're on the same wavelength, just using different terminology.
Also, the IC's actually do decent damage with their d-throw chaingrab. You can also wait for abusable DI and combo afterwards instead and get 40-50 damage out of the grab, even alone.
Plus it's just annoying to get chaingrabbed. As one of my friends described IC's, the purpose of SoPo is to get as much percent while living as long as possible. Instead of trying to win, you get tiny isolated hits that annoy the enemy. The more irritating your single IC is, the more psychologically vexing it is when he finally dies and comes back with a partner.
Of course, one could argue that your goal is ALWAYS to do as much damage while surviving, but... you know what I mean.