yepWider pots=longer branching and fan extension.
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Simply Amazing!!!wider pot = wider/bushier plant
taller pot = taller/less bushier plant
The plant will grow only as supported (held up) by its root mass. It makes sense, a wide bush can't be supported by a few roots going down, it'll topple over sideway.
off topic - this thread reminded me of this bonsai pot plant (not mine):