My prefix can compare;
My infix is an implied comparison;
Comparators use my suffix;
And my whole is comparable to another word of the same length.
What am I?
The title is a quote commonly attributed to Theodore Roosevelt. It is irrelevant to the riddle.
I am an eight-letter verb.
As identified by guesses, the word ends in "-ate"; that's not, however, the suffix referenced in the riddle.
The prefix is an entity used specifically to compare one "thing" relative to another. The "comparator" referenced in the riddle is the electronic device; however it's a proxy for electronics/digital technology as a whole.