It isn't always a guaranteed 14% from dash attack however. Dash attack only works through a certain range of %. I would imagine that on at least lighter characters that there would be times QD would hit while dash attack wouldn't get there in time due to the distance while still being under 100%......or I'm dreaming again.
And I don't mind that you found this first: I'm just glad I thought of something that makes sense without someone else talking about it first. ^_^
Dash Attack pretty much works starting from 20-25 up until 105% on most characters. Before that you should be going for easy low percent combos and after 105% you should be killing, so instead of Bthrowing just Dthrow and Up Air, Up Tilt or Up Smash them.
Wi-fi.
Theres ya problem. Like, almost nothing works on wifi. >_> Particularly if you have a bad connection.
If your connections are good you should be able to manage some stuff but honestly don't take WiFi lag losses too seriously. The way I see it: If I lost due to lag, shrug it off. If I lost due to being outplayed, I take that to heart and think about how I could fix it for next time.
If you mean try reading the stickies I've done that. It's not in Kirk's guide and it's not in this topics index. Fairly new combo I presume so it's expected.
General guide:
Bowser and Ganon: Works for 0%.
Every other heavy: 15% or so.
Everyone else: 25% or so.
Olimar, Game and Watch, Ness, Jigglypuff, Squirtle and Kirby appear to be immune to it. There may be more but that's all I tested.