hell, already mentioned it earlier but let's use the actual numbers:
Machamp base speed: 55. The top speed a Machamp can have is 229. this is with beneficial nature and max evs.
Pidgeot base speed: 91. The lowest speed he can have is 86. that's a negative nature and max evs. if you put them on the same nature +/-, Machamp is still faster at his top speed vs. Pidgeot no speed. numbers to use? Pidgeot has a 205 min with a + nature on it, 187 is the min on a neutral, 252 is the max on a - nature, which is barely 20 points higher.
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The King Wang.
Listen up Urinal Cake. I already have something that tells me if I'm too drunk when I pee on it: My friends. - Colbert.