Phoenix had success also with Alas but when Abueva was out, that's where the nightmare started. Well, the team are always working for the best interest of the team and their aim is to win, Alas is just unfortunate not able to finish his 3 years contact with the Phoenix, but it's still all good for the team.
Since their entry in 2016, Phoenix's overall performance is at worst so I don't call it a success.
Maybe not a success for you but they have reach in the semi finals IIRC.
There is only a single time where they reached the 2nd place but even twice to beat advantage on the playoffs, they lose.
Phoenix's problem is not the coach but the players itself. They need to overhaul the roster.
I guess it's hard to do that unless they can acquire a dominant center.
What I've noticed in the PBA in the past years is that when a team has a good big man, they usually win, like Fajardo for instance in SMB and even the GSM with Greg, this is the only two teams that dominate the league, but wait up, GSM was a shitty team before coach Tim Cone accept the coaching job, so maybe we can also consider the coaching job of Phoenix which is not good or outstanding.