There Three different ways to look at this
1. playing with friends on public match
2.playing with randoms
3.playing a private match
1. when your playing with friends on a public of cause it is going to be easy, You work together and create a plan and get Jason kill quick but 90% of the time when I play with friends on public match we don't get the kill we escape because the Jason is to smart for us me and the mates were in a game and we had the sweater and Jason mask with Tommy we stuck as a group so we could kill Jason and out of no where Jason just dropped in and kill our counselor who had the sweater and than brutalized the rest of use with in minutes the reason why Jason can be easy to kill on public match's sometimes is because their NOOBS who just got the game but when playing with really skilled players it's much harder.
2.Playing with randoms and trying to kill Jason is like trying to keep a tiger away from red meat the problem with randoms is that no one listens the idea of the game is to survive and get help but when playing with randoms it's bloody impossible no wants to listen, I hate it when you have the mask off Tommy is ready to kill Jason and and then the guy with the sweater leaves. playing with randoms and trying to kill Jason is just so hard some people listen others don't.
3.If you are always playing on a private match you will find that it is way too easy to kill Jason because your playing with the same people and you get use to them playing as Jason and you find a way to kill them that is easy if you play on private match killing Jason is going to be too easy because you get use to the players moves and what they do
the best way in my opinion to play Friday the 13th is to make a party and public match that way the Jason could be hard to kill or easy it's a mix and the best way to play it in my opinion