They are a little better, I estimate 500 to 700% better if that means anything. A 5Mhz or less video signal can get by with a strand or two of braid connected but for satellite signals past 2GHz and general RF use like a scanner antenna the compression types are a must. They are nearly loss less over the frequency range with use with police scanners and acceptable for use through about 2.5GHz.
As an example of this its "illegal" for a DirecTV or Dish installer to use anything but an approved compression type F connector on your install. Its written into their instructions and taught by their training instructors. I had a contractor use some crimp types without our knowledge on a large DirecTV Latin America system in a building with RG-11 trunk lines and RG-6 feeders to multi-switches and receivers all over the building. When it was done a bunch of channels would not work and looking at the system with a spectrum analyzer I found two huge frequency suck outs within the 950 to 1450Mhz distribution system.
Turns out the RG-11 crimp connectors had a problem at one frequency and the RG-6 crimp connectors had a problem at another frequency and with a few hundred connectors in the system the frequency suckouts were well over 20dB. I had the contractor replace every connector in the system with compression and we finally had a smooth frequency response that we needed and expected.
I would also use compression types for video cameras also as they are trouble free and have built in O rings to keep moisture out.
I have put on many crimp-style F connectors for our video system and they work fine. Is the compression style better?