No because if each attack has 50% chance to crit 150%(feel free to correct not sure what the crit dmg value is..) more (its 50% more) dmg and you do 10 attacks.
lets say you do an attack at 1 million dmg for arguments sake.
the range of the damage those attacks can be is between 10 million dmg(0 crits) or 15 million damage(10 crits) with the following chances:
Probability of a crit
crits in a row
% chance of occuring
0.5
1
0.5
0.5
2
0.25
0.5
3
0.125
0.5
4
0.0625
0.5
5
0.03125
0.5
6
0.015625
0.5
7
0.0078125
0.5
8
0.00390625
0.5
9
0.001953125
0.5
10
0.000976563
5 crits = 5 mil + 7.5 mil = 12.5 mil dmg @ 3.1% chance
6 crits = 4 mil + 9 mil = 13 mil dmg at 1.5% chance
not to mention in bgs with multiple marksmanship hunters in it which would increase these chances…