If you donate all refills 1 at a time you get 2.5x SR (SR-Wild3 chance 80%) level on average per refill donated. If you donate all - it takes some to you would ena at around 800- 1000 SR levels.

The top8 players all got 1000+ defensive wins. All other players get under 500 defensive wins. It looks like at least half the top 8 players is free players. If I became a paying player I would spend my Money on my main accoun not on an alt to indirektly wins. Half of the top 8 players was not in top 100 in last event. Top 100 player in last event was almost only big spenders. So most of the players are not big spenders.

It is easy to find a players offline who they can beat non with no risk.

1$ spend on main accound = One pudding = 3 attacks = 3* 5 = 15 tickes. Offensive wins only give 5 tickes each.
1$ spend on an alt. give = One pudding = 3 attacks = 3* 3 = 9 tickes. Defensive wins only give 3 tickes each.

If they use an alt to boost main account they also risk getting banned. If they spend real Money on main account they will not be banned.

So people who want spend real Money act in a very strange way it the use an alt to boost there score.

I am cetain some players have 10+ alt accounts from last event. I think that they just attack main account 3 time from each account just jump to the next. The top players who gain defensive wins the fastest get 30 wins per half hour - If thay have 10 extra accounts thay would get that.