that's a bit goofy, because there are plenty of traders with a co-located box at brokerages clipping speeds of, let's say for argument's sake, round trip, with internal processing time for checks vs. easy to borrow lists, margin, capital, out to ECN, and back, at less than 15 ms to ARCA, less to INET (for example). To think that those guys don't have an inherent advantage....firing their algo out there? The algo is key, but execution speeds (if that's part of your strategy) are key.
To isolate your "profit" as a percentage of speed is silly, but you all know you're in ther same ECN's with guys trading like this, right? It might be hot air to those that Don't trade for speed, but fo rthose that do (they'r eon the board) it does matter.