Listen to both back-to-back. Busta's is totally different. Much quicker, and he puts the "beat" in his voice at like 16th notes while she does 8th (ok, i may be off, but his flow is much quicker in the real song).
I still couldn't do what she is doing -- just pointing out that Busta's is way different and still nutty.
This just made me miss my car bad. Good luck with the sale -- definitely nice. I got $4000 from insurance for my wrecked ass one with 206,000 miles. This is worth every penny.