speed - Are Class 4 microSD cards faster than Class 10 microSD cards for small files?

In a comment to this Hardware Recommendations SE question, Agent_L writes:

There is no such thing as "fastest" card, eg cards with higher (like 10) class are faster for large files (eg video) but for small files class 4 cards are the faster ones.

Are Class 4 microSD cards faster than Class 10 microSD cards for small files?

Answers that include benchmark testing results will be most appreciated.