The greatest commentators are those in the stands 100 yards from the action or those in the commentary box with every electronic aid imaginaable. The electronics do not conclusively show a catch has carried or not if it is close.
I saw Dujon when keeping drop a catch and in the act of rolling over pick it up and claim it and the Australian batsman was given out. You want I should go on about how Kasper wasn't out in that fateful test because his hand was not on the bat or how many dismissals Martyn had in the same series where the ultra slow replays proved he wasn't out because he hit it.
Umpires make mistakes, players make many more mistakes, commentators are abyssmal on certain issues and spectators are worse.
If you truly want to help become an umpire and lift the standards if you are that good.
As for ganguly well frankly getting to the Indians I am heartily sick and tired of not seeing Tendulkar being given out a few times a match when hawkeye shows he is clearly out and I am heartily sick and tired of dumb commenators expressing joy that he wasn't given out by some commentating quirk. Never mind that the fools sitting at the top of the stand could tell he was out, just pat the umpire on the back for saying no because it would have been a 'brave' decision saying out. Pitching middle and off, hitting the pad slightly towards middle and would have taken middle half way up and saying no isn't a brave decision it is poor umpiring. But hey who is counting let's pick on a few players for claiming catches that the tv thought fell short or a batsman refusing to walk. Asak the famous David lamb about not walking in a County and bragging about how the umpire made a mistake. Look what happened to him. But it's okay with him I guess.
It is simple, play it by the laws, get rid of the elctronics and let the umpires decide. Umpires from the home country weren't good enough for some and now we have neutral umpires they still aren't good enough.
As I have said, there is a big opportunity out there for folks who claim to see all these to become umpires, rise to the top and improve umpiring.
Bet you won't though.