I think the 1970 Brazil was better, but can't say as I never watched them. Going by the names, then it is very likely
If I remember right, Brazil in 2002 is still to this day the only national team that has won all their matches in a World Cup, and they did it dominantly too with Ronaldo as their talisman.
Rivaldo, Ronaldo, Roberto Carlos, Cafu were all sensational. Ronaldinho was good too, just not brilliant. They probably weren't the best national team to win the cup, but being the worst of the Brazilian squads would still be one of the best, given the other national teams who have won it.
Rivaldo was the star of the side, but Ronaldo's story and amount of goals was one of the ultimate comeback stories and obviously him being the bigger name, plus how Rivaldo's name has been tainted by his antics, the story of that team and that World Cup is being steadily re-worked and that will probably be exacerbated further still in years to come as Rivaldo's name is steadily removed from the timeline.
As far as Brazil sides go, it is universally agreed that it's either '70 or '58 as top 1 and 2 and then there's a toss up at the bottom with '62 nestled in third:
1. 1970
2. 1958
3. 1962
4. 1994
5. 2002
For me, but either way, the highest '02 gets is 4th over '94. The 2002 is the most untested and although they scored a lot, it was against weaker opposition than the others and that makes them harder to gauge. 1994 were very staid and dull for a Brazil team, but they were absolutely rock solid and on the other end, they converted with aplomb. They are also more battle-hardened, coming up against Holland and Italy, in the KO rounds. Two teams that were looking the part themselves, especially Italy.
As
@Gio has said above, the '02 is the most untested. They had more names who are known to be greats in their position, but also more weaknesses. The '94 team was just really solid with no area of the pitch to hone in on and exploit. For me, they beat the '02 team, but even if we swing it the other way, they're both "only" contesting for bottom places.
Obviously, I'm not saying any of the above to slight them; the first two teams on the list are always in the discussion for greatest WC winners of all time, so it's no slight on them. '62 is a side that would probably be the highest of all with a fit Pele entering his peak years and Garrincha playing out of skin, but even without Pele, Garrincha's performance in that tournament eclipses anything from the sides below.
Who you beat and how you beat them always adds weight in these discussions and unfortunately for '02, they had the weakest opponents and the most underwhelming performances relatively. That World Cup was essentially euphoria that Ronaldo had returned, and it made it a Disney story; it's probably the most romantic of the WC wins in terms of personal triumph.
Incidentally, I'm not sure '02 is rated above '82, but of course, that's got a lot of subjective criteria to it.