Yes, in my book 3x30m with 4-5 min breaks will always be better than 10x30m with 1 min breaks.
In the first example you get 3 repetitions that contribute to a positive speed adaptation, as indicated by Pakewi. In example 2 you get 1 good speed rep (assuming the athletes are not holding back on rep 1, knowing that 9 more are coming) plus a mish-mash of special endurance work with bad technique and greater risk of muscle strain.