Gyro by far. I've always been awful at console shooters, but gyro allowed me to play Doom 2016 on the Switch decently. I remember playing shooters on the Wii and being a tiring experience in comparison.

Best use of gyro I've experienced thus far has gotta be in Sniper Elite 3/4 on Switch.

Holding your hands steady and carefully dialling in your aim then pulling off a tricky shot with pinpoint precision just feels incredible.

It's also very satisfying in the Splatoon games.

Honestly I don't notice the difference other than execution.

Gyro is not fixed by a predetermined screen position which is more flexible. But for that reason it is also requires more in-game options to modify versus the user having a mental map of where to point (pointer). Most developers never bother with or adjust gyro controls which imo creates the lack of satisfaction. All wii games that use the pointer can be recreated 1:1 with gyro if the developer gave a broad range of control over sensitivity & on the fly recentering

As someone who grew up on Halo and twin-stick shooters, playing Metroid Prime on Wii was a revelation. It offers the satisfying gameplay of a light-gun shooter but allowing you to actually control the rest of your actions fluidly and feel fully immersed in the character. Not to mention how perfectly the Metroidvania level design was translated into a 3D plane, which perfectly complemented those controls.

As far as single-player FPS experiences, I'd say Metroid Prime with pointer is really only topped by something like DOOM at high framerates; but playing DOOM at the proper speed requires you to be somewhat familiar and comfortable with either twin-stick or M+K controls. I can't imagine trying to really rampage through those games with pointer controls or relying on gyro to calibrate your aim. Or at least I've never cared to try it. In DOOM you don't take time to aim, you maim and slaughter instinctively which relies on moving as fast as possible.

Anyway, I'd go with pointer.

The Wii was so innovative that it killed motion controls for good. Well done Nintendo!