Is Vihtavuori powder equal to IMR or Hodgdon or is it better?? Please give details

It depends...

.....on what particular load you are shooting in that particular gun

Some years ago I was able to purchase 2 lbs. of VV N133 from the importer at a very attractive price. I used it exclusively with cast bullets in different caliber rifles and was quite pleased with its accuracy & cleanliness. Whether it was better, more accurate or more consistent (ES & SD) than similar charges of IMR 4198 or AA 5744, I can't say as I never did a side-by-side comparison, but my targets strongly indicate suggest similar performance levels. ...Maven