It's a comparison that doesn't make much sense because he had a much better squad to start with than he'd have at Everton - and I think that's the point bedford makes. He did so with a limited budget and nobody's denying that he did a great job, but he was lucky to get the best striker in the world for free. And yes, he was lucky. Kane's raw talent has nothing to do with Pochettino, just like nobody credits Ferguson for Ronaldo's career, and rightly so. Likewise, Guardiola didn't 'make' Messi.
When it took over, we had already played in the Champions League, something Everton have done once (I think) since the creation of the competition. If he had done the same with Arsenal, who from what I remember, were roughly on a par with us when he took over, he'd be considered a very good manager but a trophyless one too. And that's what he is (except for that French Cup he's won a couple of weeks ago). I don't think anyone outside the Spurs community considers him as one of the best managers in the world. We had a great run, again, nobody denies that but he needs to be there on a regular basis to be considered amongst the best.