They have not gotten any bigger, some might just be some sort of consolidation or something. That is irrelevant anyway as is any sort of comparisons with other products. Just don't worry about it.

Paid for products and some free versions may contain multiple applications that need updating and configuring depending upon a user thus comparisons are impossible.

CCleaner and the like don't do anything either to definition updates, they are just not capable of anything except trivia.