Check out Joe Cunningham's winners and losers post https://www.redstate.com/joesquire/2020/02/19/winners-and-losers-of-the-las-vegas-democratic-debate/
Bloomberg? He had his moments, but he did not make a very effective showing here. Seemed nervous, and had trouble articulating his points. He did rise to the occasion when his capitalism was questioned. He did not back down, and he did not apologize for his wealth. Instead, he doubled down and showed that he was proud of what he amassed. This is anathema to the far left, but for moderates, centrists, and independents, this is like candy. Even so, I'm not convinced that this will propel him to the top. If anything, he'll remain in the same place.
Biden performed better than he ever has at these debates. Had some stumbles, but overall, he represented himself and his experience well. The question is: Will it be enough to get him back to frontrunner status? I'm doubtful. Unless Sanders makes a huge mistake, Biden is still down for the count.