Stock SpeedQB is a 5v5 airsoft ruleset. Australian gel-ball speedsoft borrows the SpeedQB name and style, but each league and venue runs its own rules (team size, scoring, chrono limits). Always check the specific event ruleset.
Speedsoft Australia is reported to be the host and licence holder of SpeedQB Australia, running the licensed 5v5 stream (its own site is currently unreachable). Other prominent QLD events run adapted formats: Gelsoft Australia SpeedBrawl is a 3v3 (not 5v5) double-elimination event, SpeedQB-style, with flag captures as the main scoring system, open to ages 12 and up. That is a house ruleset, not stock SpeedQB.
Gel blasters also differ ballistically from airsoft (heavier, larger, lower-velocity gel beads versus 6mm plastic BBs), so engagement distances, rate-of-fire norms, and hit detection are tuned to gel, not to airsoft.