Comparisons in Damage
Tested both the fallout 3 Ripper at full condition and the ripper from fallout 4, while aesthetically different the ripper in fallout 3 appears to inflict slightly more DPS than a unmodded ripper in fallout 4.
However this is not conclusive evidence as I have to first cross examine all three rippers which include the ripper from fallout new Vegas, Fallout 3 and Fallout 4.