I can confirm that LP100, when correctly implemented, has very different peaks and valleys than EMA50. It is not possible to emulate a LP function with an EMA. Regardless how you set the EMA's time frame, you can only match a few peaks or valleys, but most won't match.

The reason is the different frequency response of LP and EMA. EMA is a first order lowpass filter, LP is second order.

Admittedly the curves in your screenshot look quite similar - in fact they both look like EMA variants. A LP line is normally smoother and has no small ripples as in your screenshot at the left side. But that might be just chance, it's hard to tell at this scale.