The problem with that number is that you don't just need set odds. You actually need set odds *and* for the set to hold up (or for you not to be drawing to 1 out when you do), and that second number is significantly larger than the first number, especially 3 handed.
The other issue is that 88 = 22 there, and you most assuredly should not usually be calling with 22 in that spot. You guys just want to call because you're thinking of all those awesome 643 flops, when the truth is that you actually have reverse implied odds on those flops when you do get them.
(yes, I do fold there vs. competent players all the time)
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