I don't know where you've got your information from - but I'm afraid you're labouring under a misapprehension - and quite a big one!
Spread betting and CFDs are identical in so far as both of them are merely a vehicle by which a trader has access to the market. To use an analogy, think of a baker. To bake bread, a tin is required to put the dough in. Tins can be square, round or rectangular etc. and equate to spread betting, CFDs and options etc. The tin is the vehicle in which bread is baked, spread betting and CFDs are the vehicle by which people trade the markets. The dough can have all kinds of different ingredients to produce a huge variety of different bread types. The dough equates to different markets, e.g. equities (Google, Facebook, Vodafone), commodities (oil, gold, coffee) and indices (Dow, FTSE 100 and Dax) etc., etc.
So, based on the above, hopefully you can see that you can trade a wide range of different markets - and individual instruments within those markets - via either spread betting or CFDs. To understand more about the similarities and differences of these trading vehicles, check out this FAQ: What are the Pros and Cons of Spread Betting Vs CFDs?
My mistake, you're right. What I meant was I like the fact that CFDs give me the DMA for shares whereas indices most suited to spread betting.