A much better team? Yes. A much better offense? No. also played in a much better division. As far as pressure is cod, according to PFF's Pressure%, Newton was the 11th most pressured QB in the NFL and Andrew Luck was the 10th most pressured QB in the NFL. The difference between the two was 0.6%.
So no, Newton did not take "far" less pressure. The difference in pressure faced between the two was negligible. What was not negligible was Newton's 66.4% accuracy% while under pressure compared to Andrew Luck's 56.0%. That's a difference of over 10%.
Just saying.