I think Mortal Combat did better and is a more popular movie than anything based on something from Marvel.
Mortal Combat (1995) World Wide Total Gross: $122,195,920 (At 2002 dollar value: $149,079,022)
Spider Man I (2002) World Wide Total Gross: $821,708,551
Me thinks your estimates are a weee bit off.
Even if you consider the weakening of the American dollar from 1995 (MK) to 2002 (SPI) at 22%, Spiderman still kicked the bejebus out of Mortal Combat in the Box Office by 551%.
fyi Iron man (2008) only totaled $585,133,287 world wide vs SPI $969,616,090 in 2008 US dollar value. (18% adjustment from 2002 - 2008)