Nicehash excavator doesn't charge any fee, so they don't make more money from removing Phoenix.
Nonsense.
Phoenix 0.65% and you can mine anywhere.
Excavator 0% fee and you can mine only on nihcehash with 2-3% fee.

The question is what happened really? Why nicehash is not explaining what did they actually compare to get "different hashsum" on their end.
Because Phoenix we use (from end of January) got exact same hashsum as posted in opening post in this thread.