no
if the game make a calculation from all above
- playing home or away (5% from the tickets)
- watching or not the game (+8% from managers)
- watching or not the game - friends (5 friends X2 % it's the max)
- player's quality, condition, moral , the right formation and orders also affect (unknown how much)
when the match is starting, will give for your team, for example 60-40 ball possession.
If you have that 10% bonus and opponent 0, then it will go 60 +10% > 66% for your team and 34% for your opponent.
If at some point of the match, you 'll use the extra button, its 10% + extra 5%, so 60 + 15% > 69-31 ball possession.


certain abilities could get cumulative affects from several bonuses
i really don't know.
But all those are very minor factors so you really can't have any conclusion.
Some times I did a testing but in top eleven every game can be very different from another even with the same exactly conditions (because Luck- roll dice has also an important role in the game).

One more thing to say
It's not worthy to spend precious greens to increase a bonus from 8% to 10% but if you 're trying to do the right thing in general, the game will reward you (even if you 'll have your bad days).