I tend to agree. While something like Thor in Reason is more modular and has better options for syncing rates and depths with time signatures etc, Pent I can come real close. Here's a breakdown:
You have up to four oscilators available. Osc's can be synced in pairs (1 and 2, 3 and 4). Each osc has a LFO balance knob which dictates how LFO 1 and LFO 2 are applied. You can set it all the way to the left (LFO 1 only) or to the right (LFO 2 only).
You have several LFO's you can use. LFO 1, LFO 2 and a master (EG) section. LFO 1 and 2 can be run in series, parallel, and you can set them to affect left, channel, or both channels.
I hope this helps you understand how Pent I works. I've gotten LOTS of great vintage style sounds out of it.
P.S. You can also use it as a vocoder!
http://www.youtube.com/watch?v=eWdYrxXo0xA