you're gonna get mixed response here about chix strips. especially if you have an inch+, which is pretty big.
my thoughts... they can be a gauge of riding style, BUT as soon as you build up better confidence and body position they become less important. so focus on staying relaxed, and keeping a steady line through corners.
your front to back difference... i dunno, its usually the other way around. my guess would be some sort of suspension madness. somebody else will give a better answer.
as for the left/right dif, i can say that its your body position. being more comfortable with left is normal, and it means that you are sitting in a way(hanging off more maybe) that requires less angle through a turn, however with the mental impression that you are leaning farther. this is a good thing. on the rights you are prob sitting more upright and therefor leaning the bike farther. again, this is normal because a right turn will always have less visibility than a left and forces you to become more nervous.
also, it only takes ONE turn to scrub the shine off, so the strips arent an accurate measure of your riding. use the actual wear to analyze your riding.
chix strips do vary between tires. no experience with the roadsmarts, but i have found sport touring tires to have less of an angle to the edges than high performance rubber. for example, power pures and the new dunlop q2 are almost vertical at the edges. by the time i got to the edge of the pures my pegs were hitting (though on the z1000 which has low pegs). track oriented tires are designed like this so you dont run off the edge. but when i ran pirelli angel sport tourings, the edges came prob 10deg sooner.
btw, i think its funny that many of the tire manufacturers are including chix strip "gauges" these days! pirelli has the trident, metzeler has the elephant nonsense, and mich pures have three lines.