We are comparing to Bush and Clinton here.
Bush:
GW Bush empowered and equipped a team of horrific advisers and white house leaders. He gave a group of profoundly evil people the levers of power. Bush's white house team would use those levers of power to trick, lie, and spread misinformation in order to trigger a war with Iraq where the military industrial complex would be the only winner. They succeeded in tricking 79% of Americans, the majority of both houses of congress (including Biden).
Bush's great failure was having a circle of leadership who's first loyalty was the military industrial complex and their pocketbook. We have already seen from Biden's profoundly competent white house leadership team he has avoided that fate.
Clinton:
There is no disputing Clinton was a great president. However Clinton had it much easier. His party controlled both houses early in his presidency. He did not have a republican faction that was claiming he was not the legitimate president. He did not have cable news on air every night spreading lies and propaganda about him and America. He did not have to prevent a civil war. He did not have a dangerous Chinese government attacking American interests in the cyber realm and deploying propagandists across the internet. He had a Russia that was not sure what it was. In short, he lived in the time of the "peace dividend" of the cold war.
Basically, my argument is Clinton came to power when it was easy time and certainly did great things. Clintons remaking of the mortgage market would empower and create home ownership to a massive swath of America that never dreamed they could own a home. Truly a great achievement.
Biden has come to power in the hard times, and is doing great things. His party does not fully control the senate, and he is still managing to push through legislation that is changing America and the world. He has not only managed to make a vaccine available to everyone in America months faster then anticipated, he also continues to insure the vaccine production is ramped up in order to save the rest of the world. Biden came to power in a time when the economy was a disaster, and there was no peace dividend to help him turn it around. Yet despite the previous administrations efforts Biden has turned it around.
In short, Clinton was given the victory of the cold war and spent it wisely on America. Biden was given shit and ashes, and is saving both America and the world with it. This makes Biden the greater president.