Meaningless information and not true for 7.5. My Lumia 800 connects to WiFi faster than any device in my house. And I have plenty of them.
Okay, I just got this quote notification....
Since all of your other devices are (as you implied) slow, != WP7 "1.5gen" devices being fast a wifi handshakes.
I've already had my old Focus (still have) and Focus S (returned due to a LOT of bugs, some were later corrected, some not), then Titan (sold, just didn't need a phone that wasn't as functional as a real tablet, yet too large to be a decent phone) side by side. It's no comparison, both second release devices (Focus S and Titan) were at least 3-4 seconds behind the old Focus in establishing a wifi handshake. Even my Focus was still slower (by about 2 seconds or so?) than my iPhone 4S in establishing a WiFi connection.
Either way, it might not affect some users, however, it's damn annoying for a phone with its GUI designed around having information instantly avalible.