That is not even close to true. The Radeon will give you a major boost due to T&L and DX8 support, as well as hardware assisted DVD playback. The speed increase will be noticable and vast. The Ultra is a serious ripoff as the Pro is easily overclockable to Ultra levels. The 64mb Radeon is a good buy, but for $100, the 30% boost may not be worth it, especially if you have no intent to use the video in/video out functions.
Gimme my TriLevel Cache
Modded Matrox Parhelia 128mb Retail
AGUIA Y TBRED 1700+@2ghz