Well, this topic has certainly generated some interesting discussion.
I would have though that Bigger pad surface area = more pad in contact with disc = more friction = increased braking power...
I'm not sure how pad size relates to heat dissipation on brakes, I understand the whole bigger surface area = less pressure thing. But if your generating, presumably, the same friction over a larger area would this not generate more heat causing the discs to run at a higher temp? Hence using grooved discs which would cool more efficiently than non grooved and potentially offset the heat issue.
What is interesting to note, with regards to the experience of those who have carried out this upgrade, is that using 100 series pads with standard discs doesn't neccessarly increase brake performance but does increase pad life whereas as a combination of 100 series pads with grooved discs does yeild an increase in brake performance.
Could this be due to improved cooling of the grooved discs?
If this is the case then would you not gain by fitting 100 series pads either way, whether it be increased pad life or increased performance.
...or is the subject of braking performance too subjective to really draw a concise conclusion...
