I imagine that this was something deliberately engineered in by Audi. After all they are exactly the same car on the same MQB chassis. I imagine if I was so inclined it wouldn't be all that difficult to alter the suspension and swing the balance back (though I appreciate you shouldn't have to do that on a car that costs £10k more).
Price is much of a muchness - I reckon the Audi will retain more of its value, so the end result will be almost negligible.
Thing is I'm not going to be driving it as if my hair's on fire so the fact that it's a bit slower on a track is totally irrelevant to me. I think the interior is nicer, and as you say the 5-pot sound. I think it looks better than the Mk7 in general too (no offence to any R owners here but I really dislike the current R's body kit), but the Clubsport swings the balance back towards the Mk7. Plus buckets as an option, which Audi sadly have dropped.
Definitely a first world problem having to choose between the two tho.