Country: England
Doubt there would be any difference in our league position/performances, if we swapped Leno and Martinez...both are the same level really.
Our issues in the first half of the season were attack and midfield, not goalkeeper
So I agree with the first statement before the ellipses, I hand on heart don't believe that we'd have many (or even any) more points with Martinez rather than Leno in goal.
Added to that I think Leno is a great keeper, I honestly do and even stellar; he is really good.
However from Martinez's form at the end of last season and his form with Villa this season, he looks to be the better keeper. If Leno is stellar you could argue that Martinez has been world class given his recent form.
Basically whichever category Leno is in I'd say that Martinez has been better than that and is in the category above.
Again though and to make it clear this is only going by recent form and this may or may not fizzle out in a few seasons, though at this point I suppose there's no reason to assume he won't stay at this level but nobody knows for certain (and don't pretend you do).
Am I mad that Martinez went to Villa? It stings a little but because Leno is so good I'm honestly not that mad.
However if (and only if) it is true that Arteta promised Leno the #1 spot despite Martinez coming in and killing it, and if it is also true that he didn't promise Martinez atleast the cup games then that was a goddamn moronic decision, no hindsight needed.
If we had the chance to keep them both we should've used this season to see which is better and we should've gone into the season with Martinez as #1 till he made a mistake.
That said thankfully Leno is good so even if the scenario above happened thankfully I don't think it's really damaged us.