skillups with int/wis over 255

[xoran]

So my understanding is that skillup rate is based on int/wis. I usually run 311 to 320 int.

For baking and pottery I have the following stats

baking
191->250 1752 misty thicket picnic combines
29.7 combines per skillup

pottery
200->223 800 combines to date
34.8 combines per skillup

are these numbers in line with 255int or perhaps even worse. From numbers I've seen my baking rate is like 5 or 6 combines per skillup higher than average. It feels like either int over 255 does nothing, or even hurts you. Curious if anyone else has noticed anything like this.

[Craftah]

I just did baking from 200 to 250 with 255 INT and a geerlok:

1516 MTP combines or 30.32 per skillup

Based on this very small sample it would appear that INT higher than 255 is not really being taken into account.