It's not hard for Vi to stick to a target, honestly. Ult to them, knock them around a bit, if they try to run, Q to them. Repeat. Granted, like the other guy said, yeah it's like that with any champ with a gap closer, but that doesn't suddenly mean it doesn't apply to Vi too; especially so given her ult.
Strong yes, nerf worthy possibly. Q unreliable once you know distances and escape paths (oh your trying to psudo flash past the wall ill just stand in your way while your slowed from charge)
wards= udyr lvl of surprise, w/o irelia lvl
dueling= shaco rules, you get your procs on surprise you got a chance, i see before hand just no no.. dont do it to yourself
Ultimate,: early:WW,moakai W, skarner, noc,mumu q. Late: its great if you know got fed.. which is GL kinda thing. top: NO ONES like omg VI im totally countered **** i can handle her. Jungle: better hope lee sin. xin (insert other bruiser) doesnt know how to invade .