No, I think you're misremembering, as he is QUITE correct here.
We're talking level 5, jumps into a minion wave, one shots the enemy laner 100-0, and the jungler if they tried ganking for a double kill. (Her E's passive had 150 base damage plus a small ratio of like .3AP at rank 3, so killing all 6 minions dealt just over 1,000 damage with AP runes, masteries and a Doran's start, not to mention her W hitting for 100 + 1.0AP itself, giving her ~1150 damage in AoE just by pressing W into a minion wave that she had primed, well before any champions had 1k hp naturally as this was also before RIOT front-loaded the stat gains from levels, and put an additional chunk of level up stats into champions starting stats; and likely against mages in the mid lane, with lower hp than usual, and no scaling MR, so 30 base plus whatever they took, if they took any, in runes [note, flat AP or AP/lvl blues were pretty common at this time])
Yes, her 2.0AP ratio ult, and what, .8AP? on the full D.o.T. of her E made her strong as a burst mage/ranged assassin, but it was no where even close to as bad as AP trist turning your minion waves into literally 1-shot death traps.