So I tried lvlin' yesterday in AV....
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A few facts;
Lose time : 15-20 Min
Win time : 10-15 Min
AV lvl : 71-80
Win EXP : 120 k - 150 k
Lose EXP : 60 k
Total games : 13
Total wins : 11
Total losses : 2
Total time in bgs : 179 min (not counting the queue since I quested during downtimes)
Total EXP : 1'505'000
Doing the quests in AV = EXP aswell! ( In my calcs I didn't do quests)
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1'505'000/3= 501 k /h