Sorry for taking a day to reply lol
Their budgets are nearly the same, at least spending-wise, in the last few years, and Cocu only had better results in Europe this year compared to Ajax, which flopped early in the champions league quals and EL. Last few years Ajax have also had ridiculous groups which usually had eventual finalists/winners in it as well. I can see your point though.
Style of football is horses for courses, as Martinez also came with the "attractive attacking possession based football" tag and that really went down the toilet really quick. Personally I'd want a more practical manager that isn't afraid to switch it up based on opposition, so to say, as that is a better and more winning way for England.
Both are coming from a relatively easier league though, so that's also a worry if we were to consider them I suppose.
That list was a personal opinion list anyway, I'm not forcing it on anyone!
Also PSV lost badly to AVB's Zenit both home and away last time, didn't they? lol