We don't live or die by polls but this is interesting for two reasons:
First, it compares the two men at a similar point in their presidency; and,
Second, Rasmussen has been a very reliable pollster over the years.
Add to the mix that the media was overwhelmingly positive to # 44 and very negative to # 45.
Here are the numbers in the 13th month of the presidency:
Rasmussen Feb 2010: President Obama 44% approval
Rasmussen Feb 2018: President Trump 48% approval