he never had a Suarez like season for Madrid.
His fitness has played a major part of that. During that span Bale looked totally unstoppable where and In terms of goals and assists to minutes played he mostly he has come close lets take a look
Luis Suarez Best 3 Seasons
2014/15: 16 goals 14 assists 2180 minutes played. 72.6 minutes per direct goal involvement
2015/16: 40 goals 16 assist 3150 minutes played.
56.25 minutes per direct goal involvement( I don't even think Messi or Ronaldo has hit this ridiculous number and had it not been for Ronaldo's existence he would have won Ballon D Or that year with Bale as a runner up)
2016/17: 29 goals 13 assists 2865 minutes played. 68 minutes per direct goal involvement
Gareth Bale Best 3 Seasons
2013/14: 15 goals 12 assists 2073 minutes played. 76 minutes per direct goal involvement
2014/15: 13 goals 9 assists 2582 minutes played. 122 minutes per direct goal involvement( his worst year at Madrid though Madrid as a whole that year wasn't very good)
2016/17: 19 goals 10 assists 1741 minutes played.
60 minutes per direct goal involvement
As you can see Bale has come somewhat close from a production standpoint, but even at that I don't even think its fair to compare Bale to a Suarez like season where in some instances the worlds best players haven't even managed to accomplished that, which says a lot about how criminally underrated Suarez is. (I would personally take him over most of the prime 90s strikers)
Bale seems to have been elevated by his team peformances and big moments in certain as opposed to playing at a complete level that's really elite.
If you are surrounded by better players of course your performances are going to elevate. Suarez played with Messi and Neymar and as a result he had one of the best production seasons ever witnessed in modern times. Fact is that Bale has come through for Real Madrid in many key matches against big opponents when the stakes are high. He has contributed as much to the team as the team has contributed to him.
Was he better than Di Maria btw? I genuinely can't remember
No Di Maria gets the slight edge because he was Madrid's main facilitator. Bale was a very dangerous forward but Di Maria was making things happen.
Also how good was he at the euros? Seem to remember a lot of discussion about his actual peformances not being that great and it being more of a team effort, like Ronaldo
Wales as a team definitely stepped up but that dosen't mitigate the fact that Bale was clearly Wales best player that year and they wouldn't have gotten past group stages if it wasn't for him.