No, I meant what I said; they are inherently tippy. Because you only have one wheel in the front, it tends to tip over in the direction of centrifigul force.

As to whether they're more or less stable than a bike, the distinction I'm making is between initial stability and ultimate stability. A trike at low speed has very high initial stability and won't tip or lean, but once its starts to lean, it is much less stable than a bicycle.

A bicycle has low initial stability, in that it will lean over very easily, but it has greater ultimate stability because you manage the forces on the bike by leaning, and you can control the lean.

It's similar to the difference between a flat bottom kayak, and a rounded bottom kayak. The flat bottom kayak has great initial stability, and feels more stable, but when it goes over it goes over quickly with less control. Whereas with the rounded bottom kayak, you can control the lean, and while it feels quick to lean its ultimately more stable.