We consulted expert researcher Roger Rines:
SuperCharts (SC) and TradeStation (TS) are nearly the same charting package. Where the advantage of one comes over the other is in TS's ability to allow extensive programming. SuperCharts only provides a form based construction wizard that limits the creative range of possible programs. Where TradeStation shines is that it provides an open editor that is only limited by the programmers creativity and workspace memory. There are limits to what can be done in TradeStation but they are far and away more extensive than what is possible in what I've seen in Metastock. TradeStation does have a 64K limit for code modules in TS versions below 4.0 but TS2000, which is currently in the early stages of release, doesn't have that memory limit. For users of TS4.0 and earlier that wanted to build very large code modules, they needed to create external DLL modules that handled some of the programming load. These large programs will run on either SC or TS but only TS will allow programs to be created that use DLL. Programs built in earlier versions of TS or SC and don't use an external 16-bit DLL module will translate easily to TS2000. If a program was constructed with a DLL, the DLL must be compiled as a 32 bit DLL before the translated program will function properly. In some case programs that required a DLL in the earlier version won't require any external module in TS2000. If you are finding Metastock limiting, than I recommend you focus on TradeStation as you will find less capability than what you expect in SuperCharts.