Based on personal experience, the GSXR1K is close to the Busa in straight-line performance. It doesn't, however, have as much low-to-mid rpm torque as the Busa.
The TL-R? Not that close...I can pull on a TL-R at will, unless the TL-R has been extensively modified. Most stock TL-Rs make about 125-130 RWHP, and the Busa about 150-155. Based on published dry weights and HP numbers, the Busa makes about 0.32 HP for every pound of weight, and the TL-R about 0.30. The TL-R also has a higher center-of-gravity, great for wheelie-ing, but less helpful for acceleration.
If your primary concern were off-the-line performance, then the Busa, 1K and ZX-12R would be the top choices.
Mike