ATT made waves on Thursday morning with the announcement of its new Mobile Share Value plans, offering a large segment of its customers cheaper data plans just in time for the holidays. Perhaps unsurprisingly, T-Mobile was chomping at the bit to issue a response. CNET received an email from T-Mobile marketing executive Andrew Sherrard in which Sherrard said that ATT’s new Mobile Share plans are confusing, expensive and miss the mark. “After you do the complicated math, in multiple cases, these new plans are actually a price hike for customers,” Sherrard said. It is true that for many customers the new data plans won’t provide much, if any, additional savings, but those with off-contract devices will welcome the change. Sherrard argues