Spillover against Terrain in Ogre DE

[ghostofjfd]

I haven't seen this question come up. In rule 13.01.2 of the 6th edition, I think "base strength of 8 or more" should read "base strength of 4 or more". Consider: Spillover results are degraded, with printed X yielding D and printed D yielding NE (7.11.1, 7.2). The attack strength for a spillover attack is halved (7.12). Terrain defends at D4 (13.01), including against spillover attacks (13.01.2). A D against town or forest damages it (cuts roads); an X or a D against an already damaged town or forest rubbles it (13.01).

So say you have an Ogre potting a HVY (D3) in forest with a main battery (4). The shot at the heavy tank is resolved at 1:1. The spillover against the forest is 4 x 1/2 to 4 for a 1:2. On a roll of 6, the forest hex is damaged and, if it was already damaged, it's turned to rubble by an attack with a base strength of 4. Am I overlooking something?