I think there's a lot more to school than 4 unit Maths, however, technically we still take a higher % of Band 6 and E4.
i.e. NSB own NSG hard at 4 unit maths every year, yet we always do worse overall...
Your higher 4 unit Maths merits can be attributed to you high candicature (120 people, if I can recall), while we only have a small candicature (50 something), we consistently get higher percentages of merits, while you get higher numbers.
Also, I don't really get what you're talking about in that second bit. Are you agreeing with me? Because that's what it sounds like.