Biden and Trump would agree: Ukraine will never have the manpower to take back large areas of captured territory; and including Ukraine in NATO is not worth the risk. Does that mean their objectives are fundamentally similar?
No. Biden was determined to preserve as much of Ukraine’s sovereignty as possible. He wanted to make sure that any decision to trade land for peace was made by the Ukrainian government, not the outside world. The level of aid given to Ukraine was designed to increase the Ukrainian government’s leverage during the inevitable negotiations. Trump, on the other hand, wants peace at virtually any price. He thinks Russia is a natural American ally; Ukraine is the principal obstacle to that alliance. His objective, therefore, is to make a deal with Putin with minimal outside input and to use his leverage on Ukraine to make it stick.