Not the case. PoolWaffle did build a stratum proxy and was testing proxying 25% of the pool when GHash implemented the tiered reward scheme. However, WafflePool stopped mining at GHash as soon as they posted info about the 1.25x bonus.
Well, that's not true.
Waffle admin said that he is pointing part of pools hashrate directly to ghash until the promotion end, cause even with 1.25 it is better.
Yes it was true... What you are saying is not true. Show me a quote of WafflePool saying that - because he didn't. A Chinese whale with ~20GH that has been mining at WafflePool (used to mine at MC for a while) is mining at GHash until the promotion is over. But WafflePool has NOT been proxying to GHash at all.