Placing competitors in rank order based on two scores

Hello all,

I'm wanting to rank competitors based on two scores. I've had a nosy around the forum and found these posts here, but they're based on the lowest score, rather than the highest score.

Basically, the highest percentage wins (B25 on the Intro A tab). However, if there is a tie between two or more people, then the highest collective score wins (B22 on the Intro A tab). Is there any way that this can be automatically calculated?

Looking at the above example, I prefer their way of laying out the data (i.e. all competitors in one long list), but this would involve a mix of senior and junior competitors.

Is there any way that I can have a long list of competitors for each class, but then having two separate score boxes for juniors and seniors? I'm also missing a box for the horse that is being ridden as some competitors ride two horses, but I think I can work out how to sort that out.

I know I'm a newbie, but I've had to join out of desperation! I've been roped into scoring and need to find an easier way of doing it (after feeling the wrath of a rider at the last comp when I accidentally mixed up the scoreboard! ) Thanks in advance, your help is much appreciated!

Unaffiliated 11 May 2013 - Copy.xlsx

Take a look at this

Column AE are Arrray formulas
They are confirmed with CTRL SHFT ENTER and not with just ENTER
If you do it correctly you see these brackets {} around the formula.

If it still doesn't work post your file and I will look at it.