So far, from the limited number of ball time / game time submissions submitted, LOTRs average ball times are not that much longer than most games. Average ball times are are 1-2 minutes as stated by the games audits. Obviously, better players have longer games than average sometimes. And obviously again it depends how it is set up.
Under 5 minutes, is hardly a long game, taken by itself.
On the other hand....
If a tournament director wants to maximize coin drops and payouts for prize money, obviously they want as many ultra short ball time games as possible.
As usual, money is the whole motivation for everything. Forget about how good the game plays. Get those 4 players off that machine so more coins can be inserted!
If not, why not just have a tournament with FEWER longer ball time games? I suppose that is out of the question because money is the whole motive.