It definitely makes it stupid easy, at least on Normal lol
Like 80% of a player's efficiency on higher difficulties is knowledge of the game mechanics.
Odds are that it's only stupid easy for you because you're a medic standing back, doing nothing but firing an occasional healing dart and complicating real players' games.
EDIT: Not meaning to imply that medics are useless, simply that this guy has no idea how to properly play one.