How to compare Stratix V vs Xilinx resource

I had been working with Xilinx' Virtex5 FX200T, Virtex6 LX760 and Vitex7 2000T. Without running through any tools, how can I compare the number of FFs and logic gates? For instance, for Virtex5 FX200T there are 122,880 FFs and 196,608 logic cells. How does it measure up to the Stratix V parts above?

Regards,

Mark

see page 4 for Stratix V resources:

http://www.altera.com/literature/hb/stratix-v/stx5_51001.pdf

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From that, it seems straightforward to compare FFs where the 5SGXA7 has 939k which compares to the V6LX760 with 948k FFs. How does one compare the 622k Logic Elements for 5SGXA7 to the 758k Logic Cells for V6LX760? Is there an agreed upon convention to convert to logic gates?

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I do'nt think it is easy to convert LUTs to gate figure as this depends on archtitecture of LUT and hence device.

The resource categorisation is identical as shown below, though xilinx reports more useless detailed breakdown:

xilinx slice registers: Altera dedicated registers

xilinx slice LUTs: altera LUTs (aLUTs)

Number used as memory: altera mem aluts

Number of block ram/fifo: altera memory blocks

Number of DSP(48Es): altera dsp elelments...etc