Road bike vs Tri bike speed

Support for Aero bars on gravel/road bikes. The only difference is you don’t need to run off the bike. But as far as on the bike effectiveness I think anyone would want aero bars for solo efforts. The question needs to be re worded: Road bike with aero bars vs Tri bike speed. I’ve done them all and know what’s fastest for me in every situation. You guys need to figure it out for yourselves. Enjoy