Without getting into a who's roll bar is bigger debate, it's not really an apples to apples comparison of size because the AHCs roll resistance and cross linking capability acts directly on the shocks hydraulically. It doesn't need an oversized torsion bar to translate those forces between the wheels.
@HGB, as you're trying to get more sportiness out of the LX, you might try adjusting the AHC height sensors to lower your car. Could lower about .5 - 1" which would do a few things. You'd be pioneering here as no-one really has done this, or at least given feedback here.
- adds pre-load to the coil springs. This may or may not actually make the overall suspension system stiffer as the globes will be relatively more relaxed. Same would be true if you could actually locate stiffer coils to retrofit.
- lowers center of gravity
If you could source the diesel variant sway bar, that may be worth a try. I'm not sure too much will be gained as I find AHC to do a solid job managing roll. I think it's a feel thing rather than the body rolling over much. Perhaps focus on the rear sway in particular as that will make the front end more responsive to turn-in. Short of finding a stiffer compatible bar, you could try to shim or eliminate the bushings on the rear sway end link at the chassis brackets to engage the rear sway more positively.
You could also try to source the LX 21" factory wheels to reduce compliance. Or go with sportier tire models that have stiffer sidewalls.