Precisely. Bonham switched from Giant Beats to 2002s because the latter had more cut and volume. I'm pretty sure he perceived the two series as distinct sonic classes, not as tonal equivalents with different labels.
Important note: Everyone associates Bonham with 2002s, but he didn't make a full conversion to the series until 1972. Hence, on Zeppelin's first four albums, we're hearing mostly Giant Beats.
Paiste's website features a chronology of Bonham's setup:
Paiste Artist: John Bonham - Paiste
www.paiste.com