The only advantage the halftrack has over current armored vehicles is the open top. I read this years ago, when the Israelis were still using halftracks along side M114s. The report said that with the halftrack having an open top the energy of the blast could go up, where as in a m114 the blast would be inside the vehicle. During the wars both vehicles would take hits, but the halftrack had a better chance of survivors. I also want to point out I read this over 30 plus years ago. I am 100% sure todays armored vehicles are light years ahead of the M114 and halftrack. I also own a M2 halftrack with full armor, the armor is really not that thick.
One of the few, Frank USMC RET