Talk:Kassadin/@comment-27004415-20151023123810/@comment-24385282-20151101020726

All absolutes like " Actually at 4 items he can 100-0 any squishy, regardless of who it is, period"  are actually just theoretical. He can get outplayed or make tons of mistakes that you aren't considering whatsoever. Even if you played perfectly, we can assume that your opponent played perfectly as well in which case it basically just comes down to who can has the most damage, CC, and targetable skills/attacks or instant skillshots (such as Tormented Soil or Rift Walk).

Consider versus Veigar. Let's assume Kassadin can dodge Veigar's E and W but not melee-range Q. If that's the case, we should also assume Veigar will use these skills only in order to force Kass to move a certain direction to dodge them. Kass can almost guaranteed land all of his kit, but he has to enter melee range for most of it. So we can therefore assume Veigar will land his Qs if Kass lands his W, E, or R. With an E, Veigar can temporarily force Kass to back off (or otherwise be stunned for Veigar W to land), which can prevent Kassadin from using W. This could buy Veigar enough time to land another Q before Kass can go in again, past Veigar's E.

Now it's possible that Veigar can ult Kass and might kill him (2 Q's and an R from Veig can kill most AP enemies if his Q farm doesn't suck) or it's possible that Kass will not die to Veigar's R and will then have his own R up to go in and might kill Veigar. But if Veigar lives through that, Kass may have to back off because if he goes in for the kill, he'll be again in melee range and will likely die from a third Q (which we're assuming will be landed as Kass is in melee range)  unless Kass can kill him before he gets his Q back up.

Lots of "if"s and "might"s and "possibly"s. No 100% guaranteed chances of either of them dying with zero counterplay. In fact, if anyone can guaranteed kill any enemy, it's Veigar (or Nasus or Thresh for the same reason - all of them have a targeted ability which can guaranteed kill their target with enough stacks). The only person who would have any chance of surviving Veigar (or Thresh or Nasus) in that case is Sion. Kassadin, surprisingly, is not Sion.