Agree, weight is only one parameter...
Strutless are usually rubbish for other boards than kitefoiling, and kitefoils in the upper end of the range.
Meaning are you going to use the kite for other things than marginal winds or their sweetspot wind, dont go strutless.
Find out which kite you like the best (eventhough that is what you are trying to now, I know, and this is also 1 struts)
I know many who dislike their strutless, as if out and wind picks up, they are flapping all over.
Where I dont mind, as I rig down, so avoid the upper ends.
Relaunch, and drifting in the water is sometimes tricky, and drifting can be impossible...
But they ARE lighter and better, if you can live with above.
Same goes to a tiny extent for 1 strut kites, compared to 3 strut kites, but not nearly as bad, as they drift just fine when on the water, most of them.
Maybe slightly off topic...
But how well the kite turns, how it balances, how it reacts on sheeting, these are the other extremely important and different parameters one has to evaluate, apart from weight.