No, manually auto-compounding with your VECRV would not yield similar gains as APR by itself. This is because APR by itself is higher on Yearn, and it is also more expensive to constantly sell your rewards from locking for CRV and locking them again. This is because you would be incurring additional costs from the selling and locking process, which would reduce your overall returns. Furthermore, the rewards from locking for CRV are not as high as those from APR, so overall you will not be receiving the same gains as you would from APR.