Why are they worse than the Fanatec v3?
Could you please give more details about?
Thank you
Is the G Pro Pedal good...yes, can you get better for similar price or cheaper...yes...but..
If you've got G Pro wheel and on console then G Pro pedal is your ONLY load cell option for the wheel base. If you're on PC, there are plenty better options for the price.
The Fanatec V3 for example is a matured product line, has about everything the G Pro pedal but more;
1. Lots of adjustability, while the only adjustable element on the G Pro pedal is firmness and spacing.
2. Vibration motors; simulates wheelspin and oversteer on gas pedal, ABS & locking tires on the brakes. Not all games support these but for those that do it adds an extra layer of immersion, you'll zone in on the limits much better than waiting for the FFB on the wheel, it's like FFB for your pedals but not quite the Simucube ActivePedal or it's price point.
3. Clutch pedal also has a distinct feel that is somewhat similar to real world clutch than G Pro simple spring feel...though with the G Pro if your gas pedal dies you can swap out with the clutch, same hardware as far I can tell.
4. Full metal, is just nicer.
5. additional tuning accessories available, like dampering kits and other aftermarket stuff given the popularity of these pedals over the rest of the field.
About the only advantage I see of the G Pro Pedal design over the V3 is the ability to mount each pedal module independently, but the mounting option I feel is not very rig friendly with just two M6 that had to be mounted from underneath, your milage may vary pending your specific rig and / or DIY handiness.
I actually didn't need to modular mount the G Pro pedals, but did it to add some angles and make it more compact on the rig, as the design of the pedal base lacks lustre and unnecessarily cumbersome.