Maxipod Temperature Differences

[John.g]

If a Maxipod is heated only with a oil fired boiler does the outlet temperature change (before any TMV) depending on where the cylinder stat is located, for example if the probe is located towards the bottom of the cylinder and set say to 70C then because of the deltaT through the boiler the cylinder top will be higher and there will be a falling temperature gradient down through the cylinder?. If the deltaT through the boiler is say 15C then the cylinder top may be 85C when the cylinder stat cuts out the boiler at 70C. If the stat is located towards the cylinder top then the cylinder top will be 70C but the bottom only 55C. So would it be true to say that one can't get a cylinder full of water at 70C (or whatever the cylinder SP is set to) when the cylinder contents are being circulated through the boiler vs a traditional cylinder & coil.