No comparison between them. Totally different guns and purposes.
The steel sp101 is a general purpose firearm of normal construction and reasonable accuracy.
The LCR series is an airweight short range belly gun.
A LCR .22LR is at best a practice tool if you have a LCR .38. Or perhaps a CCW gun for the really recoil shy.
As a stand alone firearm, the LCR .22 is like a S&W M43. Damned near useless due to heavy trigger pull and general difficutly of shooting accurately DA only. The LCR series are better airweights than the S&W .38/22RFM/22LR series of 340/351C/43 however numbered.
For a comparison, note the rise in DA pull weight.
#9----------->LCR .38
#11-12------>LCR .22LR and LCR .22RFM
#12-13------>most centerfire J frame S&W
#14---------->S&W airweight .22s
The rimfire trigger pulls are heavier in both brands because either will tell you making the rimfires FIRE is harder than banging a centerfire primer in the light guns that move since they have so little inertia.
You gotta define the purpose and select accordingly.
For a .22, buy a Ruger SR22P and forget the wheel guns.