Television antenna comparison for signal reception
It depends on where the stations are located. The Channel Master has a lot more gain, and so will be much more directional. ie. You will have to point the antenna more directly at the station.

Examine these two gain patterns plotted on the same graph. The dipole in green has more gain than the Isotropic antenna in blue.  But at 90°, the Isotropic would be the better choice.


The same applies to the two antennas you have shown.

Update
To address the comments:

An isotropic antenna is a theoretical antenna that radiates equally in all directions. ie. sphere.

A dipole is just two wires, one driven and one ground. Like this image from ARRL. And for reference back to the plot, the wires would be along the Y or vertical axis (from the markings -90 to 90).



Update 2 From Channelmaster, here is the pattern for the CM2020