The thing is that the a league is a good league and not miles away from the premier league, at that level the difference between a premier league player and an a league player comes down to small percentages. Half a step quicker, a fraction of a second faster at making a decision, releasing a pass sightly earlier, etc.
Compare that to the number of struggling pros or jouneymen from lower levels who have come the other way and done very well in the A League . Ifill probably top of that list
Plenty of a league players could almost do it but just lack in one or two areas.
I think you're both right, and was about to try and explain why, but Ryan just hit it on the head I reckon.
The difference is only minimal, but that little bit is actually really big at the same time. Kind of the 80/20 thing - you gotta have that 80% to become a professional, but it's all about how much of that other 20% you have or don't have, that's what will decide which league you are good enough to compete in.
If you're just as good as an EPL player in every single category, except just a tiny fraction slower in the decision-making, then that could potentially be the difference between scoring 10 goals, or getting tackled and robbed of possession 10 times instead. So suddenly that fraction of difference becomes a chasm in terms of end product, and you're turfed into the lower leagues.