I don't think you realised what i was talking about, someone said that spells from a low level can't hit a high lvl, so i just mentioned how it can, and just said about that event, It has nothing to do with him hurting me
In PvE spells can reliably hit up to 4 levels above you.
5+ gets very annoying and if you see a ?? Mob you can basically just forget casting stuff.
Melee is a bit different, they get glancing blows but generally they get to bring their stuff to the target.
Code:
If the difference between the mob's level and your level is greater than 2, then the formula for calculating your base miss rate against that mob is:
with single-wielding: 2% + (Mob Level - Your Level) * 2%
Source: http://www.wowwiki.com/Hit
So that 51 had: 2% + (85-51)*2% = 2% + 34*2% = 70% miss chance.
While it has been quite a while since I PvPd against high level players, I'm pretty confident in saying that the same formula applies there.