Yes, different philosophies.
The Kenwood TM-D710/TM-V71 back panel (they are the same) has a smaller heat sink, thus placing more demand on forced ventilation from the fan, which makes room for two speaker jacks, a 6-pin mini-DIN for analog connections to external equipment, and an 8-pin mini-DIN for digital (RS-232) connections to external equipment, plus the usual SO-239 antenna connection and power cable.
The Yaesu FTM-400XD back panel has a larger heat sink, one stereo speaker jack, a combined 10-pin mini-DIN with both analog and digital connections (thus forcing the user to buy a splitter cable), plus the usual SO-239 antenna connection and power cable.