Gems fixed-

[McfRat]

give everyone at least a gem when they removed trees , etc...

[oscarrainville]

The whole point of removing trees and debris is to give you a chance at getting gems, and you are already guaranteed XP ( experience points ) so this isn't really needed.

[Bockerijder]

give everyone at least a gem when they removed trees , etc...

Lets calculate
In the trees etc. You find
0, 1, 2, 3, 4, 5 or 6 gems.

So 8 trees will probably give you
0+6=
1+5=
2+4=
3+3=

Now plz tell me the average per obstacle that you get from SC

[Ectar]

give everyone at least a gem when they removed trees , etc...

that is the average im sure, dont forget gem boxes and you might get 6 gems from a tree, you do ok with gems so stop whining

[WarrenJames]

give everyone at least a gem when they removed trees , etc...

Not needed. Everyone gets a fair amount.

The whole point of removing trees and debris is to give you a chance at getting gems, and you are already guaranteed XP ( experience points ) so this isn't really needed.

Chance? What chance? Oh right... Will explain after the next quote.

Lets calculate
In the trees etc. You find
0, 1, 2, 3, 4, 5 or 6 gems.

So 8 trees will probably give you
0+6=
1+5=
2+4=
3+3=

Now plz tell me the average per obstacle that you get from SC

You are assuming a random number generator (or even a pseudo random number generator, since it is hard to make a computer truly random) is being used. Your math might be off since as stated here (http://clashofclans.wikia.com/wiki/Obstacles) the gem rewards are quite predictable.