Of those who testified in favor of the bill, not one shared a story of how current law had crippled their business, noted Sen. Fred Risser, D-Madison, Tuesday when the full Senate debated and eventually approved the bill.*Tort reform supporter bends truth about own legal history
It would appear your suspicion is fairly well grounded.
If you desire to retool the Wisconsin rules of evidence, shouldn't you be required to provide at least some Wisconsin evidence as to why?
By the way, further to Walker's claims that "tort reform" will improve Wisconsin's fiscal climate, the State Department of Administration's Division of Executive Budget and Finance pronounced "No State Fiscal Effect" upon its review of the governor's proposals (.pdf; 6 pgs.).
* Straight party line.