IMO usually it's some minor difference, like a fraction of a second faster speed you can notice on a youtube review. But those are so one-sided towards things they can measure/show - if you actually use the tool it often ends up meaning the "faster" and "more powerful" tool can also vibrate more or be more tiring to use.
In the end the differences are all very minor, just enough to start such arguments
I use Makita because their batteries are the most "standard" ones. With that I mean that you can get fake Makita tools on Aliexpress easily, but you won't find bosch or milwaukee or dewalt or hilti or metabo at all. I don't need the best of everything, sometimes a cheap brushless chinese power tool works great for home use, but the fact they use the same batteries is a huge advantage for me.
Very interestingly, there's even some development done by the Chinese. Makita only makes professional pruning shears that are ridiculously expensive for home use (like, I think 1200-1500€). The chinese make some shears totally unrelated to Makita for 45$ but they use the same battery:
Ironically these end up being the best homeowner pruning shears on the market. They're the most narrow/versatile ones out there and they work great. The chinese even offer a long extension-handle for pruning tall brances, it hooks up on the battery port. Here's what Dewalt offers:
Not sure what they were smoking when they thought of that??? Also they cost 5 times as much as the chinese ones and seem to use a brushed motor?
Here's what Milwaukee has:
Better but still sooo fat. Who needs the "jaws of life" to prune fruits?
Here's the real Makita pruning shears, just for a comparison of what a professional tool for pruning is supposed to look like:
Obviously by far the slimmest of the bunch, but waaaay more expensive. They're also running a cord to a backpack-harness with batteries so you can work all day with them - not meant as a homeowner tool by any means...
