Depends on the rest of your system stats...
just like Tigger posted...... your PC build / specs will be the depending factor on whether you can gain anything visualy verses your PC taking a bad resources hit and hurting your overall game play / views
I personally have CCC on some of my PCs and also, like Tigger have opted for Tray Tools instead on some other PCs in the past, because of the smaller footprint/resources being used.....
regarding Aces High & CCC or ATI Tray Tools..... Aces High only requires the ATI or the Nvidia Display Driver and nothing else....... Aces High's built in Graphics settings & abilities will make use of your Video Card's AA availability as well as other things regarding shaders etc.....
at least that is how I understood Skuzzy explaining it several years ago....... I do not think anything has changed since the new graphics engine was put in to place, although I could be completely wrong.....
If your Computer is Strong enough, you can run any Graphics software suites ( ATI / Nvidia ) and not really notice a difference in whether it is hampering your Aces High game play.......... but for those with lower end computers, I would recommend to just use the Video Card's Graphics Display Driver only, and not install any video card tweaking software
hope this helps
TC