After reaching the Sky-Reaching Realm, Lord Buddha is the first being capable of pushing Su Xin to such a degree.
Regarding the accumulation of personal power, Lord Buddha actually has not surpassed those from Ancient Times by much, since for thousands of years, his Primordial Spirit has been in a state of dormancy.
However, in the realm of Martial Arts, Lord Buddha has indeed far exceeded the Ancient Times. Just look at the various methods he is deploying now, wanting to challenge the Emperor of Mankind after ten thousand years is not a blind self-arrogance, but a preparation with real confidence behind it.
Alas, now Lord Buddha has encountered Su Xin, all those techniques, all the aces he had have been destroyed by Su Xin, leaving nothing behind.