I think nowadays cordless tools are more powerful, or at least seem or feel to be more powerful than their mains counterparts, for at least a couple of reasons.
Cordless brushless motors are said to be more efficient in distributing power, and the cordless tool blades have a narrower kerf. This makes cutting smoother, and is more noticeable in thicker, or harder timber and materials.
My Mafell plunge saw is, or at least seems to be more powerful than my TS55 but, out of my three plunge saws, my Makita cordless seems the most powerful.
To be honest, I’m amazed at how well my cordless tools perform, we have 18 volt and 36 volt circular saws that eat through anything we use them on. 36 volt mitre saws that after cutting all day on the same two batteries, I forget are cordless. A 36 volt reciprocating saw that will tackle anything with ease.
A 36 volt 230mm grinder is probably our next purchase, as I had a go of of another trades a couple of weeks back, very impressive.
A far cry from my first cordless tool many years ago, a 7.2 volt drill/driver that I had to save for.
In a workshop, I don’t mind cords but, on site I feel more comfortable with cordless, and I think cordless is definitely the way forward.