Is Sprint's LTE coverage exaggerated on its website?

The testing shows Sprint's LTE coverage was wanting
Based on the stats, where Verizon and AT&T scored 100% coverage in Dallas, Forth Worth, Kansas City and Atlanta with their LTE signal, Sprint's LTE signal was available in just 10% of the Dallas market, 15% in Atlanta, 20% in Fort Worth and 25% in Kansas City. Another problem is that according to AFE, Sprint's coverage is actually short of what the carrier claims online. Below, we have a map of Sprint's LTE coverage in Dallas from AFE's testing compared to a map used by Sprint displayed on its website. You can see the difference.
Sprint launched its LTE service in July and hopes to cover 123 million POP's by the end of the year.
source: FierceWireless

Comparison of Sprint's Dallas coverage from the testing (L) versus what the carrier claims on its website
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