Ok, two things. First, the dificulty settings in the OG were broken. So unless you used a third party patch of some kind, all difficulties were really beginer (This is why TFTD is so hard. people complained that even on superhuman the game was too easy, so begginer in TFTD is harder than Superhuman would have been in XCOM:EU)
Second, there's a ufo mission in the OG that if you didn't shoot down the apropriate UFO's before they reached their target's borders, you'd have a strong chance of automaticly losing that countries funding permanently. Source
So you could lose funding in an extreemly unfair way in it.