Are bitcoin transaction confirmation times limited by block size?
https://en.bitcoin.it/wiki/Block_size_limit_controversy

Here it states that larger block size would allow more transactions per second.

If blocks have around constant mining rate (1 per 10 minutes) and fixed "amount" of transactions can fit in one block the statement logically follows. How are the size of one transaction and block size defined is a separate question.

The link also gives some context about the size limit.