Lol there is absolutely clear evidence to it. This is not a matter of opinions.
In short:
PvP:
tactical advantage in PvP
advantage by namelocking other players, when they can’t namelock you (btw if you don’t know, what namelocking is, google it, or ask for it, but don’t say there was no problem)
PvM:
you see monsters earlier than others
you can teleport faster than others
And ofc there is more, but these are the most important ones.