Yes, there is definitely a correlation between the two. If there
wasn't, all manufacturers would reduce their SAR to < 0.2 because
consumers are extremely concerned about the health risks especially due
to the fact that it has not been established beyond a shred of doubt
that phones don't pose a health risk. If manufacturers like Sanyo would
introduce such phones with SAR of less than 0.2, they will overtake
Nokia and Motorola in handset sales worldwide. However, they have to be
able to do that without the expense of dropped calls and bad reception
which they cannot.