The larger turbo will make more power and be more detonation resistant. The small turbo will be out of it's efficiency range and will heat the air excessively. The intercooler will only cool so much.
A larger turbo with the impeller to handle that size engine won't make as much heat.

We are brothers and sisters doing time on the planet for better or worse. I'll take the better, if you don't mind.
- Stu Harmon