Why is the Video Pro 2 worse than the Video 4 at ringing our house doorbell?

We had a video 4, but it didn't fit very well on the narrow strip next to our door and we needed more vertical length to our feed. I didn't anticipate that we'd be trading this for an unbearable chime, though - the Video 4 detected and played our digital house bell exactly one time, perfectly. The Pro 2, instead, will play the doorbell for a set duration - either 1 second (cuts the chime off half a second short) or 2 seconds (starts to play the chime a second time and then cuts it off).Why does the Pro 2 have different and worse doorbell functionality? Or is there some way to fix this thing?