Totally agree. And may I just say I am a big fan of your no-nonsense posting style. The mental game is totally overrated. Tennis is won by being faster, bigger and stronger than your opponents. Strategy or mentality really has little to do with it. Look at Nadal winning against everyone using the same damn tactic every single point.
I mean, compare Djokovic to Murray - who would you rather have on your side in a street fight!? Lol.
What about "better" than your opponent at the sport?
Then again you're the same person who claimed that Murray is on a physical decline after he apparently peaked in the SF at this year's Australian Open, so this post is absolutely unsurprising.
Regarding the topic, I think the issue is quite simple: he hasn't won against Fedal in slams because his dominantly defensive game simply isn't good enough against them at the majors and/or he lets the pressure of playing in a grand slam SF/F get to him. I doubt he's really cowed that much by his "respect" for Fed; he has a positive H2H against him and he didn't let his "respect" get in the way of going all out to beat an injured Fed at the 2008 TMC in a match that didn't matter.