Purple Cam Design Question

some really good info here
I stayed with my MP 268\272 .450/.455 after getting some excellent advice from guys here - I too was going to swap to a voodoo cam of the same duration thinking the newer design would be an improvement and power increase over the MP cam - but was told the difference would not be worth the money (heard good things about Harolds theory and design at Ultrdyne)
the application was for a heavier truck not an abodied car - so anyhow just curious about the newer MP's vs other cams as well

also - I read once that the actual durations were measured and advertised differently on MP cams - they were actually smaller than the competitions cams - this true?

It is true that they measure .050 duration differently, but it makes their cams actually larger, not smaller compared to the competition.