Recently there was an interesting debate in Silph Road Reddit whether Psystrike Mewtwo(as it is now - and I feel like Niantic would not buff it) is better or worse than Psychic one.
Point is, Pokebattler thinks Psychic > Psystrike, while GoBattleSim thinks Psystrike > Psychic for raids. And Pokebattler owner does not seem to be able to pin down the cause of discrepancy.
Does Gamepress team know about this?
I mean, that amount of difference (several seconds of TTW) would not matter much to trainers, but it would be a good chance for the Gamepress to advertise GoBattleSim, which is unfortunately less popular than Pokebattler.
Ok, to be frank, I prefer Pokebatter because of graphical interface (I use these simulation result to write articles in non-English website) and the function to find optimal counter. However, for more exact simulation, I use GoBattleSim because I trust it more.
And also, if Gamepress team can explain what is making discrepancy between two simulators, it would be interesting also.