Tottenham take on Arsenal this weekend and Jamie O’Hara believes Spurs have a defender who is comfortably better than one of Arsenal’s key men. O’Hara – a known Tottenham fan despite his punditry – is always good for an opinion on his former team. Of course, with the north London derby this weekend, O’Hara is as fired up as he can be and he’s been giving his opinion on if some Tottenham players are better than Arsenal’s. READ MORE: Robbie Keane shares his ‘only worry’ about Tottenham against ArsenalGiven the Gunners finished second last season and Tottenham missed out on the top four, it’s har…