Main
Model
Price
Advantages
launch
Announced
Body type
Camera subcategory
Sensor
Effective pixels
Max resolution
Sensor size
Sensor type
Image ratio w:h
Other resolutions
Sensor photo detectors
Image
ISO
White balance presets
Custom white balance
Image stabilization
Uncompressed format
JPEG quality levels
Photography features
Minimum shutter speed
Maximum shutter speed
Aperture priority
Shutter priority
Manual exposure mode
Subject / scene modes
Built-in flash
External flash
Flash modes
Continuous drive
Self-timer
Metering modes
Exposure compensation
Flash range
AE Bracketing
WB Bracketing
Screen / viewfinder
Articulated LCD
Screen size
Screen dots
Touch screen
Live view
Viewfinder type
Screen type
Videography features
Microphone
Speaker
Resolutions
File Format
Optics & Focus
Focal length (equiv.)
Optical zoom
Maximum aperture
Autofocus
Digital zoom
Manual focus
Normal focus range
Macro focus range
Number of focus points
Physical
Weight (inc. batteries)
Dimensions
Environmentally sealed
Battery
Battery details
Battery Life (CIPA)
Storage
Storage types
Storage included
Connectivity
USB
HDMI
Remote control
Wireless
Other features
Orientation sensor
GPS
Timelapse recording
Samples
Videos
Summary
The GR display is better as it has more screen dots 1,230,000 in comparison to 230,000 dots of the X2 display. The higher dot count display is better for reviewing photos on your camera. The GR supports a very convenient live view feature that allows you to use the display as a larger viewfinder. The GR provides better slowest (300 seconds) and highest (1/4000 second) shutter speeds.
The X2 battery life is better than the GR battery life. According to CIPA standards the photographer will be able to take 450 photos with the X2 and only 290 with the GR. The GR weighs 245g which is 100g lighter in comparison with the weight of the Leica X2.
Considering the above differences the GR is the best choice. Get the lowest price on Amazon.